After much debate on the forum, I decided to bite the bullet and fork out a small fortune on TWS 10W60, the very expensive oil that E39 M5s seem to need to thrive.

Big thanks to Olly Bloxham for oiling the wheels of the transaction, and ultimately sourcing 10 litres of this stuff plus a BMW filter kit for £120.

I’ve other engagements this evening, and the weather is far too minging to entertain getting under the car, but at least this haul is now in stock – photographed here on the delightful yellow seats of my 330d.